CMOS exponential-control variable gain amplifiers
Journal
IEE Proc.-Circuits Devices Syst.
Journal Volume
151
Journal Issue
2
Pages
83-86
Date Issued
2004-04
Date
2004-04
Author(s)
DOI
246246/200611150121280
Abstract
New CMOS exponential-control variable-gain amplifiers (VGAs) are presented. The
control signal can be either current-mode or voltage-mode. Since no multiplier is needed in the
proposed circuits, the proposed VGAs can be very compact. For the case of supply voltages
VDD=|VSS|=1.5V, the power dissipation is only 0.48mW. The gain control range of the proposed
VGA can be 30 dB. The proposed circuits have been fabricated in a 0.5 mm n-well CMOS process.
Experimental results are given to confirm the feasibility of the proposed VGAs, which are expected
to be useful in analogue signal processing applications.
SDGs
Other Subjects
CMOS integrated circuits; Electric currents; Electric potential; Gain control; Integrated circuit layout; Analog signal processing; Power dissipation; Variable gain amplifier; Amplifiers (electronic)
Publisher
Taipei:National Taiwan University Dept Elect Engn
Type
journal article
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